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Handout

Purplemath: Inverses of Trigonometric Ratios

Curated by ACT

You know that you can take side lengths and find trig ratios, and you know you can find trig ratios (in your calculator) for angles. What is missing is a way to go from the ratios back to the original angles. And that is what "inverse trig" values are all about. Also, it explains what the inverse trig buttons on a calculator are, and how to use them.

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CCSS: Designed
Concepts
inverse, inverse trigonometric functions, unit circle
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Additional Tags
basic review of trigonometry, purplemath, purplemath: inverses of trigonometric ratios, right angle, trig ratios, cosine inverse, find angle sides, sine inverse, tangent inverse, trig button calculator, right triangle, trigonometric and inverse trigonometric functions
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Classroom Considerations
  • Knovation Readability Score: 3 (1 low difficulty, 5 high difficulty)
  • The intended use for this resource is Instructional
Common Core
HSF-TF.B.7 HSF-TF.A.3